šumar: 11841
1, 1928: Ivan Tropper. Š.L. 1, s.58     PDF
2, 1935: Naši jubilarci: Lj. Brosig, V. Dojković, J. Jekić, I. Troper, D. Trotzer .. Š.L. 5, s.173    PDF
3Ing. O. Agić, 1937: † Ivan Tropper.. Š.L. 12, s.688    PDF


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